401920856 has 8 divisors (see below), whose sum is σ = 753601620. Its totient is φ = 200960424.

The previous prime is 401920853. The next prime is 401920867. The reversal of 401920856 is 658029104.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401920853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25120046 + ... + 25120061.

Almost surely, 2^401920856 is an apocalyptic number.

It is an amenable number.

401920856 is a deficient number, since it is larger than the sum of its proper divisors (351680764).

401920856 is a wasteful number, since it uses less digits than its factorization.

401920856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50240113 (or 50240109 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 401920856 is about 20047.9638866395. The cubic root of 401920856 is about 737.9838325103.

The spelling of 401920856 in words is "four hundred one million, nine hundred twenty thousand, eight hundred fifty-six".